Subject: Configuration VoIP providers limitation: impossibility of use "+" as external number. Telepac is a Portuguese VoIP provider. It isn't at your list of VoIP providers, but my problem is that I can't insert 'Telepac' settings in 3CX server. \\ Telepac (Portugal) settings* Username: +351302XXXXXX Authentication Name: +351302XXXXXX Domain: voip.telepac.pt Proxy server address: voip.telepac.pt Proxy server port: 5070 Registrar server: voip.telepac.pt Registrar server port:5060 Outbound proxy: proxy.voip.telepac.pt Outbound proxy port: 5070 The problem is that I can't insert "+" in external number. There is anything that I can do to manage this problem? *settings provided by Siemens Gigaset A580 IP configuration page.